98 lines
2.2 KiB
C
98 lines
2.2 KiB
C
/* vim: tabstop=4 shiftwidth=4 noexpandtab
|
|
* This file is part of ToaruOS and is released under the terms
|
|
* of the NCSA / University of Illinois License - see LICENSE.md
|
|
* Copyright (C) 2018 K. Lange
|
|
*
|
|
* font-server - Provides shared-memory fonts.
|
|
*
|
|
* This is an implementation of the shared memory font server
|
|
* from Yutani in ToaruOS 1.2.x. It allows applications to
|
|
* make use of the Freetype font rendering backend by providing
|
|
* a common set of font files.
|
|
*/
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <assert.h>
|
|
#include <unistd.h>
|
|
#include <sys/shm.h>
|
|
|
|
#if 0
|
|
#include <toaru/trace.h>
|
|
#define TRACE_APP_NAME "font-server"
|
|
#else
|
|
#define TRACE(...)
|
|
#endif
|
|
|
|
#define FONT_PATH "/usr/share/fonts/"
|
|
#define FONT(a,b) {a, FONT_PATH b}
|
|
|
|
struct font_def {
|
|
char * identifier;
|
|
char * path;
|
|
};
|
|
|
|
static struct font_def fonts[] = {
|
|
FONT("sans-serif", "DejaVuSans.ttf"),
|
|
FONT("sans-serif.bold", "DejaVuSans-Bold.ttf"),
|
|
FONT("sans-serif.italic", "DejaVuSans-Oblique.ttf"),
|
|
FONT("sans-serif.bolditalic", "DejaVuSans-BoldOblique.ttf"),
|
|
FONT("monospace", "DejaVuSansMono.ttf"),
|
|
FONT("monospace.bold", "DejaVuSansMono-Bold.ttf"),
|
|
FONT("monospace.italic", "DejaVuSansMono-Oblique.ttf"),
|
|
FONT("monospace.bolditalic", "DejaVuSansMono-BoldOblique.ttf"),
|
|
{NULL, NULL}
|
|
};
|
|
|
|
/**
|
|
* Preload a font into the font cache.
|
|
*/
|
|
static char * precache_shmfont(char * ident, char * name) {
|
|
FILE * f = fopen(name, "r");
|
|
if (!f) return NULL;
|
|
size_t s = 0;
|
|
fseek(f, 0, SEEK_END);
|
|
s = ftell(f);
|
|
fseek(f, 0, SEEK_SET);
|
|
|
|
size_t shm_size = s;
|
|
char * font = shm_obtain(ident, &shm_size);
|
|
assert((shm_size >= s) && "shm_obtain returned too little memory to load a font into!");
|
|
|
|
fread(font, s, 1, f);
|
|
|
|
fclose(f);
|
|
return font;
|
|
}
|
|
|
|
/**
|
|
* Load all of the fonts into the cache.
|
|
*/
|
|
static void load_fonts(char * server) {
|
|
int i = 0;
|
|
while (fonts[i].identifier) {
|
|
char tmp[100];
|
|
sprintf(tmp, "sys.%s.fonts.%s", server, fonts[i].identifier);
|
|
TRACE("Loading font %s -> %s", fonts[i].path, tmp);
|
|
if (!precache_shmfont(tmp, fonts[i].path)) {
|
|
TRACE(" ... failed.");
|
|
}
|
|
++i;
|
|
}
|
|
}
|
|
|
|
int main(int argc, char * argv[]) {
|
|
|
|
/* Daemonize */
|
|
if (!fork()) {
|
|
load_fonts("fonts");
|
|
|
|
while (1) {
|
|
usleep(100000);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
return 0;
|
|
}
|